February 18, 2011

How to choose right sunglasses?


        * How to choose right sunglasses?
  1. Brown color lens tends to absorb short wavelength of light. This is good for any kinds of outdoor activity.
  2. Gray lens usually absorb wide range of wavelength, so it is good when you are going to be exposed to strong sunlight.
  3. Green lens does not distort object’s natural color.
  4. Yellow lens is ideal for driving in a cloudy day.
         The darker the lens is, the more your eyes will be protected from UV. 
          Do you think this is correct?







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